All tinned iron surfaces should be given a couple of thin coats or paint.

This explains why high tide occurs at intervals of more than twelve hours.

The main lines are doubled—an "up" and a "down" track; short branches have one tube only to work the inward and the outward despatches.

Below it is a “brush” of strip brass pressing against the tube. This brush is connected with a wire running to one terminal of a battery near the dial.

Count Piscicelli's electric post is an adaptation of the electric cableway to the needs of parcel and letter distribution.

To prevent the handle bending over, solder round the pivot hole 3/4 inch of brass tubing, fitting the pivot closely.

Agriculture is at once the oldest and most important of all national industries.

Specify very thin zinc for the air vessel, and have the top edges stiffened so that they may remain straight.

Modern methods of dairying demand the most scrupulous cleanliness in all processes.

The nearer to the hole you can wear the glass away the finer will be the line made by the pen.

The Egyptians admired magnitude; the Greeks perfection of outline

Rapidity of fire is only one of the desirable features in a firearm.

This useful little article can be constructed in a couple of hours by a handy person.

Their length under the heads exceeds the inside depth of the box by the thickness of the lid.

The funniest antics are produced by very slight jerks.

The ends of the wire should be soldered together, and the ends of the link held up to the handles by a couple of staples.

A little sliding weight to place on the rod near the pencil will be found useful for keeping the pencil point in constant contact with the paper.

A thread attached to the pencil will enable you to keep the pencil off the paper until you wish to begin drawing the profile.

The upper half overlaps the lower, outside, by a quarter of an inch.

The condensed water and tar fall from the open ends of the pipes into the base.